Fly-finger for printing-presses.



No. 693,043, Patented Feb. ll, I902.

B. MIEI'ILE.

FLY FINGER FOR PRINTING PRESSES- (Application filed June 15, 1901.]

(80 Model.)

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UNITED STATES PATENT OFFICE.

ROBERT MIEHLE, OF CHICAGO, ILLINOIS.

FLY-FINGER FOR PRlNTlNG-PRESSES.

SPECIFICATION forming part of Letters Patent No. 693,043, dated February11, 1902.

Application filed Ju:e 15, 1901. Serial No. 64,633. (No model.)

To all whom it may concern:

Be it known that 1, ROBERT MIEHLE, a citizen of the United States,residing in Chicago, in the count-y of Cook and State of Illinois, haveinvented a new and useful Improvement in Fly-Fingers forPrinting-Presses, of which the following is a specification.

This invention relates to the construction of the means used for holdingthe sandpaper covering usually employed upon the fly-fingers ofprinting-presses to prevent the printed sheets from becoming smudged bytheir contact with the fingers, the interspaces of the sandpaperallowing the ink taken up from the sheets to sink below the surface, sothat the sheets are not smudged thereby until the interspaces becomefilled.

My aim in the invention has been to provide a construction of holders orretaining de vices which will not only hold the sandpaper strips withsufficient tenacity, but will also permit the ready replacing of themwhen they become charged with ink.

The nature of my invention will be fully understood from the followingdescription when taken in connection with the accompanying drawings, inwhich Figure 1 is a perspective of a fly-finger equipped with myinvention. Fig. 2 is a plan of the wood bodyof a finger without thesandpaper. Fig. 3 is a plan of the spring for holding one end of thesandpaper strip, and Fig. 4 is a transverse section.

In said drawings,5 represents the rock-shaft whereby the fly-fingers areoperated, and 6 is an arm adj ustably mounted on and having a hubencircling the shaft, as shown, and held in its adjusted position by theset-screw 7. To the arm 6 is attached the wood body 8 of the fly-finger,which may be of any ordinary construction and is provided with openingsfor the screws 9 and 10, whereby it is secured to the arm (3.

11 is the sandpaper strip with which the flyfinger is covered. At thebase end of the flyfinger the strip 11 is secured by a spring 12, heldat one of its ends by the screw 10 and at the other end bent over andserrated, as plainly shown in Fig. 1, the serrated edge bearing upon thesandpaper and holding it by its pressure. At the outer end of theflyfinger is another spring-holding device 13, attached to thefly-finger by screws 14 and extending beyond the end of the body portion8. Its outer end is curved downward, and its extremity is bent at rightangles much in the same way as the end of spring 12, and its end edge isalso serrated, as shown. The sandpaper is carried around the outer endof the spring and then doubled back under the same and its extremitytucked between the body 8 and that portion of the spring outside of thescrews 14. The sandpaper strip is drawn taut around the spring, and theholding pressure of the spring on the extremity of the paper reinforcedby the serrated edge will be found suflicient to keep it taut duringuse.

To release the sandpaper from the springs described, it is onlynecessary to bend spring 13 upward, so that the outer end of the papermay be released from between it and the body 8, and the outer end ofspring 12 can be lifted to release the inner end of the paper, or thescrew 10 may be loosened. The replacing of the paper will thus be seento be a very quick and easy operation.

I claim- 1. The combination with a fly-finger of a sandpaper cover, andsprings acting to hold the cover by pressure upon its ends,substantially as specified.

2. The combination with a fly-finger and its sandpaper cover, offriction-springs having their ends bent and serrated, and acting to holdthe cover, substantially as specified.

3. The combination with the fly-finger and its sandpaper cover, ofspring 13 extending beyond the rigid portion of the finger, and bentdownward, substantially as specified.

4. The combination with the fiy-finger and its sandpaper cover, ofspring 13 extending beyond the rigid portion of the finger, and bentdownward, the sandpaper being doubled around the spring with itsextremity secured between the spring and said rigid portion,substantially as specified.

ROBERT MIEHLE. lVitnesses:

Enw. S. EVARTS, H. M. MUNDAY.

